From John Rodgers:

"Apparently there is a very suitable substitute for the R12, and that is
Freeze12. I know that here in my area in the Deep Hot South, Freeze 12
is very popular in the older cars and trucks. Nearly all the freelance
shops carry it."

I am in Santa Fe and have checked with AC shops in both Santa Fe and
Albuquerque and no one will touch Freeze 12 for fear of contaminating their
systems.  There are also some on-line discussions that say if someone offers
to put Freeze 12 in - RUN!  Now I don't think that there is a problem with
the refrigerant itself - but it is a blend (80% R134, 20% HCFC) and would
contaminate equipment used for strictly R134.

I am not looking forward to driving to Oklahoma in July and transporting
three kids and a dog back to New Mexico with no AC, but I seem to be stuck.

Maggie
'85 Subaru Westy